As we celebrate the Fourth of July, who can argue that our democracy is working the way the Founders intended? And who can deny that most of the blame for dysfunction must fall to the Republican Party? George Washington distrusted all political parties. He warned in his farewell address that, as they alternated power, parties would act in “the spirit of revenge” — rather than, presumably, in the best interests of the nation. The “disorders and miseries” that resulted, Washington feared, would inevitably threaten democracy. Whatever the motivation, Republicans have paralyzed our government in a way that would have shocked...